one of us is looking at the ideals and the other is looking at it pragmatically

we cant just build the thing

Yes we can (hypothetically) BUT we can't (in reality), as it was just a hypothetical regarding the importance of money. Nothing to be pragmatic about. I wasn't gonna iron out the details for a fantasy proposal when it wasn't about that.

I purposely suggested a otherworldly thing rather than the typical domestic proposal everyone is fighting about. A thought experiment as my opening post says.

What would happen is, the Chinese would steal the blue prints for it like they steal all of American technology and then build it only to have it explode and kill thousands.

Meanwhile the U.S would say they have no interest in building it all the while building it in secret with Japan like they did in the movie and find something out and never tell the rest of the world for another 100 years.